After turning 90 days into 15 years, NASA’s Mars Opportunity rover mission is officially over. Marina Koren, writing for The Atlantic, has an incredible moving story about Opportunity as well as its brother Spirit.

The Washington Post has the full history of Mars Opportunity rover and The New York Times has an interactive look at the rover’s work. Of course, Randall Munroe of xkcd also paid tribute to Opportunity.

One day when humans reach Mars, they will find Opportunity covered in dust and they will display him in a museum.